Sport Lisboa e Benfica, commonly known as Benfica, is a Portuguese professional football team based in Lisbon. The club was formed in 1904 as Sport Lisboa and played its first competitive match on 4 November 1906, when it entered the inaugural edition of the Campeonato de Lisboa.
^Before the establishment of the Primeira Liga as the primary national championship, in the 1938–39 season, the Taça de Portugal was called Campeonato de Portugal (English: Championship of Portugal).
^Includes goals scored in all competitions that season.
^Sport Lisboa absorbed Grupo Sport Benfica, changing the name to Sport Lisboa e Benfica.
^Benfica had to play a two-legged final against Sporting CP as both finished the Regional at the top two positions with the same number of points. Benfica lost both legs, 1–0 at home (Campo de Benfica) and 2–1 away (Estádio do Campo Grande). Both final matches are included on the stats.
^Benfica had to play a match after the end of the first stage at the Campo de Benfica against Carcavelinhos to determine the second team of their group (there were two groups of four teams) to advance to the second stage as both finished the first stage of the Regional at the middle two positions with the same number of points. Benfica won 1–0. This match is included on the stats.
^Benfica had to play a final match at an unknown ground against Sporting CP as both finished the Regional at the top two positions with the same number of points. Benfica lost 3–0. The final match is included on the stats.
^Starting this season, Regional wins became worth 3 points, ties became worth 2 points and defeats became worth 1 point; instead of the traditional 2/1/0 points. If a team failed to show up at any given match, that team would not get any point.
^Benfica had to play a final match at the Stadium de Lisboa against Belenenses as both finished the Regional at the top two positions with the same number of points. Benfica won 2–1. The final match is included on the stats.
^Benfica had to play a final round-robin tournament against Sporting CP and Belenenses as all three finished the Regional at the top three positions with the same number of points. Sporting won both matches and Belenenses lost both, leaving Benfica at the second place. Both Benfica matches are included on the stats.
^Benfica had to play a final match at the Campo das Salésias against Sporting CP as both finished the Regional at the top two positions with the same number of points. Benfica lost 4–1. The final match is included on the stats.
^After four experimental editions, the Primeira Liga was officially established as a national league competition with the purpose of determining the national champions, thus replacing the Campeonato de Portugal, which was converted into the Taça de Portugal, the top domestic cup competition.
^The Cup was not organized in the 1946–47 season due to overscheduling caused by the major changes of the football league system.
^The Cup was not organized in the 1949–50 season because the Estádio Nacional was the host venue for the Latin Cup.
^Benfica and Braga saw two points subtracted as the federation attributed a 3–0 defeat to both teams after crowd violence that occurred when they faced each other in the last matchday. The original result was 1–1.
^Starting this season, league wins became worth 3 points, instead of the traditional 2 points.